UI transitions seem faster than before. Everything that requires internet connection is slower; maybe, simultaneous OS 3.0 downloads from everywhere are to blame.
UI glitches are quite visible (displaying/hiding status bar and some navigation bars, for instance).
Most of previously installed third party applications continue to work; some stopped to.
Spotlight search surprises with its quite good usability. Dictaphone does what it's supposed to. So does MMS service.
Cut'n'Paste functionality is implemented in Safari as clumsy as one can only imagine it.
- Open the page containing a lot of text,
- Magnify the text by pinch gesture,
- Now try to pan this slowly by finger as you always did
- Now try to activate fragment selection;
It turns to be amusing finger dance and time killer.
It's not at all obvious how to select one single word on the page containing html formatting, when whole paragraphs are always selected by hold down gesture.
"C", Apple, you've got "C" for your cut'n'paste.